Vehicle-wheel tire.



J. H. LORIMBM.

VEHICLE WHEEL TIRE.

APPLIOATION FILED NOV. 12,1906. RENEWED MAY 26, 1911 1,014,075. I Patente'd Jan.9,1912

2 SHEETSSHEET 1.

gwvewfot J, H. LORIMER.

VEHICLE WHEEL TIRE. APPLICATION FILED NOV. 12, 1906. RENEWED MAY 26, 1911.

Patented Jan. 9, 1912.

2 SHEETS-SHEET 2.

NU-incomes February 6 1906, I have shown a tire upon which this present invention is an improveunits. In this present invention a particu- Specification of Letters Patent.

Patented Jan. 9,1912.

Application filed November 12, 1906, Serial No. 342,981. Renewed May 26, 1911. Serial No. 629.556.

Be itknown that 1, JOHN H. LomMnn, a citizen of the United States, residing at Philadelphia, Philadelphia .county, Pennsylvania, have invented certain new and useful Improvements in Vehicle-Wheel Tires, of which the following is a full, clear, and exact description.

My invention relates to improvements in wheels, and particularly the tires of wheels for vehicles.

The principal objects of the invention are to improve the tread so that it will wear longer and prevent skidding.

In my former Patent No. 811,646, dated To all whom it may concern:

ment for certain types of work. In my former patent I have illustrated and-described the use of rubber, or similar material, in conjunction with the spring tread lar arrangement of the. yielding rubber or composition material is employed so that peculiar advantages of manufacture andropair and use are attained.

Briefly, the invention consists in the employment of rubber or similar composition to form tread portions alternating with the spiral spring tread units. The composition treads may be formed in independent units or as ,a continuous band locked in place 'by' the overlying spring units. I

In,the accompanying single sheet of drawings 'Figure 1 is a side elevation of a vehicle wheel embodying the improvements of my invention, a portion being broken away so as to show the arrangement with composition units in section. Fig. 2 is a vertical sectional view of the same. Fig. 3 is an enlarged fragmentary detail of the tire. Figs. 4 and 5 are sections of modifications. Fig. 6 is a cross section of another modification.

I will describe first the form shown in Figs. 1 to 3. 11 are rim flanges carried by any suitable type of wheel. Between the flanges is preferably arranged an annular supporting ring 2, which aii'ords a continuous support for the tread units. Spiral spring tread units 33 are arranged trans-- versely of the rim and held in place between the flanges 11 by means of bolts, rods or pins 44;, which are preferably removable so that the spring units may be readily removed and replaced. Alternating with the spring units are composition units 5-5 of rubber, or similar yielding material. These composition units?) are preferably of an in .verted T-shape in cross section,.and each oi'- these units may have a flange or heel 6 at each edge projecting under the bottom of an adjacent spring'unit. These units 5 may be removed readily when an adjacent spring unitis removed, but are locked securely in place for use when all parts, are assembled. By this construction the tire may be readily repaired if damaged in any portion. The

composite form of tread in which the spring units (for instance steel coil springs) alternate with the resilient composition units, effectively prevents skidding either on hard or soitroadways. 'When the weight of the vehicle is upon one of the spring units, the spring itself yields and also the flanges of the adjacent composition units in radial direction, so that advantage is had of the resilient portions of thecomposition units. When the weight of the vehicle is upon a composition unit, the latter is compressed radially and also tends to expand tangentially, and thus: displace somewhat the adjacent coil units. Greater adaptability to various and sudden changes of road bonditions is thus afforded.

In Fig. 4, 55 represent'the projecting portions of a continuousband of resilient material arranged to perform the function of the units 55 previously described. In this construction the only modification over that shown in Fig. 2, for example, is in the continuity of the units 5.

In Fig. 5 I have illustrated a pair of spring units 33 arranged side by side instead of being spaced by one of the units 5, as first described. In this figure I have also shown the exposed portions of the resilient units 5 of greater length than shown in the other views.

in Fig. 6 I have illustrated in cross section the base of one of the units 5 (together .with other parts) in which it will be seen What I claim is: I

1. A vehicle Wheel tire, including individual tread units of coil springs and composition alternating with each other, and said composition units held in place by spring units.

2. A vehicle wheel tire, comprisin a plurality of transversely arranged spira spring tread units, and alternating composition tread units havin flanges beneath said sprin units and he (1 thereby. 1

3. vehicle wheel tire, including a rim, coil spring tread units and composition tread units, the latter being held in place by the former, and positive connections between the former and said rim.

4. Avehicle wheel tire, including a rim,

coil spring tread units and resilient composition tread units placed betweensaid coil spring units and underneath the same, and means for positively connecting said spring units to said rim.

'5. A, vehicle wheel tire, coil spring tread units and composition tread units, the latter being held in place by the former, a plurality of said composition units being connected underneath the coil spring units, and means for positively connecting said spring units to said rim.

' JOHN *HVLORIMER.

including a rim,

lVitnesses:

R. C. MITCHELL, L. VREELAND. 

